goog.net.XmlHttp.OptionType
Enumgoog.net.XmlHttp.OptionType
Type of options that an XmlHttp object can have.
.LOCAL_REQUEST_ERROR
NOTE(user): In IE if send() errors on a *local* request the readystate is still changed to COMPLETE. We need to ignore it and allow the try/catch around send() to pick up the error.
.USE_NULL_FUNCTION
Whether a goog.nullFunction should be used to clear the onreadystatechange handler instead of null.